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3 years ago

A teacher puts two tablets in a glass of water. The teacher

Chemistry

2 answers:

ehidna [41]3 years ago

6 0

This question is incomplete because the options are missing; here are the options:

Which of the following is LESS dense than water?

The spoon

The glass

The tablets

The bubbles

The correct answer to this question is The bubbles

Explanation:

In general, the density of materials and substances affects their buoyancy. This implies in water less dense materials will float and those with higher density will sink. In the situation presented, the only element that is less dense than water are bubbles; this is shown by the movement of the bubbles as these originate in the bottom of the glass of water but they rise to the surface, which shows they are less dense than water.

trapecia [35]3 years ago

5 0

Answer:

the bubbles

Explanation:

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Is the following equation balanced? SO3 + 2H2O H2SO4 no yes

postnew [5]

Answer: No

Explanation: It's not balanced because four oxygen atoms in H2SO4, whereas there are 5 oxygen atoms in the reactants side. Also, there's more hydrogen atoms on the reactants side.

I hope this helps!

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3 years ago

If 40.0 grams of zinc react with excess hydrochloric acid, how many grams of zinc chloride will be produced?

ludmilkaskok [199]

Answer:

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4 years ago

Solids or liquids are not included in an equilibrium expression because:

Harlamova29_29 [7]

I believe the answer is D

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3 years ago

Object A specific heat is 2.45 J/g C and object B specific heat is 0.82 J/g C. Which object will heat up more if they have the s

Artist 52 [7]

Answer: Object B will heat up more.

Explanation:

The formula for specific heat is as follows.

Q = $m C \Delta T$

Where,

Q = heat provided

m = mass

C = specific heat

$\Delta T$ = change in temperature

Now, both the objects have same mass and equal amount of heat is applied.

According to the formula, the equation will be as follows.

$Q_{1}$ = $Q_{2}$

$m C_{1}\Delta T$ = $m C_{2}\Delta T_{2}$

Cancel m from both sides, as mass is same. Therefore,

$C_{1} (T_{f} - T_{i})_A$ = $C_{2}(T_{f} - T_{i})_B$

Cancel out the initial temperature and put the values of specific heat, then the equation will be as follows.

$2.45 (T_{f})_A$ = $0.82(T_{f})_B$

Therefore, from the above equation it can be concluded that the object with low specific heat will heat up more as its specific heat will be inversely proportional to its final temperature.

Hence, object B will heat up more.

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3 years ago

In which of the following examples has a chemical reaction occurred?

katrin2010 [14]

"A" is the answer. The chemical reaction is when the batter becomes brown.

B is mixing C is mass becoming a liquid and D. is dissolving no chemical reaction happened there.

Hope that helps!

3 0

3 years ago